Chap 1 - number concepts Flashcards
different number groups
-imaginary
-real: - irrational, rational- integer, whole, natural
define natural numbers
-positive whole numbers from 1 to infinite
-no include 0
define whole number
positive integer
-including 0
define integer
-any positive/ negative whole number
-including 0
define odd
-number that cannot be exactly divided by 2
define even
-number that can be exactly divided by 2
define prime numbers
-whole numbers with itself and 1 as its factors
define indices
number that can be put in power
define square number
-product of number multiplied by itself
define rational numbers
-numbers that can be put in fractions
define irrational numbers
-numbers that cannot be put in fractions
define fraction
-no. that represents part of a whole
what is HCF
-highest common factor btw no.s
what is LCM
-Lowest common multiple btw no.s
how to express prime numbers as products of its prime factors
-use division
2| 4
2| 1
-use factor tree
what does > mean
big> small
what does < mean
small< big
what is the order of brackets
( ), [ ]
order of operations
-left to right
-brackets/ expand
-divide/ multiply
-add/ minus
rounding no.s
-nearest whole no.
-1 dp
-2 dp
-3 sf- 1sf is non-0 number
how to find LCM
-do prime factorisation
-same no.s will be written once & times with other no.s
